Fresh-keeping device for poultry eggs and refrigerator

Abstract

The invention provides a fresh-keeping device for poultry eggs and a refrigerator. The fresh-keeping device for the poultry eggs comprises a fresh-keeping container in which a fresh-keeping space is formed, and the fresh-keeping container is used for storing the poultry eggs to be kept fresh; and the gas adjusting module is in gas flow communication with the fresh-keeping space and is used for adjusting the gas content in the fresh-keeping space, so that the carbon dioxide content in the fresh-keeping space is 46%-54%, the oxygen content in the fresh-keeping space is 7%-11%, and the nitrogen content in the fresh-keeping space is 39%-43%. The method has the advantages that the fresh-keeping quality of the poultry eggs can be remarkably improved, and the fresh-keeping time of the poultry eggs can be prolonged.

Description

Technical Field

[0001] The present invention relates to the field of fresh - keeping of poultry eggs, and particularly to a fresh - keeping device and a refrigerator for poultry eggs. Background Art

[0002] Currently, eggs in families are usually directly stored in the refrigerator. However, bacteria are likely to grow in the refrigerator, resulting in the deterioration of eggs, seriously affecting the taste and health of users when consuming.

[0003] In the prior art, to extend the fresh - keeping period of eggs, eggs are also placed in a sealed container for storage, and a mixed gas for fresh - keeping is filled in the sealed container. The mixed gas includes 2% - 10% carbon dioxide, 3% - 10% oxygen, and 80% - 95% nitrogen.

[0004] The main purpose of the above - mentioned solution is to inhibit the growth and reproduction of bacteria. Although it can extend the fresh - keeping duration of eggs to a certain extent, eggs are likely to be hatched during the storage process, and the actual fresh - keeping effect is not ideal, so there is still room for improvement. Summary of the Invention

[0005] One object of the present invention is to improve the fresh - keeping quality of poultry eggs and extend the fresh - keeping duration.

[0006] Another object of the present invention is to further improve the fresh - keeping quality of poultry eggs and extend the fresh - keeping duration.

[0007] Still another object of the present invention is to minimize the fresh - keeping cost of poultry eggs.

[0008] Specifically, according to the first aspect of the present invention, there is provided a fresh - keeping device for poultry eggs, comprising:

[0009] A fresh - keeping container, which forms a fresh - keeping space therein for storing the poultry eggs to be fresh - kept; and

[0010] An air - conditioning module, which is in air - flow communication with the fresh - keeping space and is configured to adjust the gas content in the fresh - keeping space so that the carbon dioxide content in the fresh - keeping space is between 46% and 54%, the oxygen content is between 7% and 11%, and the nitrogen content is between 39% and 43%.

[0011] Optionally, the ratio of the oxygen content to the nitrogen content in the fresh - keeping space is < 0.269.

[0012] Optionally, the air - conditioning module includes:

[0013] An electro - deoxidation device, which is configured to consume the oxygen in the fresh - keeping space through an electrochemical reaction under the action of an electrolysis voltage, thereby adjusting the oxygen content in the fresh - keeping space; and

[0014] A carbon dioxide supply device configured to controllably supply carbon dioxide into the fresh-keeping space, thereby adjusting the carbon dioxide content in the fresh-keeping space.

[0015] Optionally, the electro-deoxygenation device includes:

[0016] A housing having a communication port for communicating with the air flow in the fresh-keeping space;

[0017] A cathode plate disposed at the communication port to jointly define a liquid storage cavity for containing electrolyte with the housing, and configured to consume oxygen in the fresh-keeping space through an electrochemical reaction under the action of an electrolysis voltage; and

[0018] An anode plate disposed in the liquid storage cavity and configured to provide reactants to the cathode plate through an electrochemical reaction.

[0019] Optionally, the carbon dioxide supply device includes:

[0020] A gas cylinder filled with carbon dioxide;

[0021] A connecting pipe having one end communicated with the gas cylinder and the other end communicated with the fresh-keeping space; and

[0022] A solenoid valve disposed on the connecting pipe for controllably opening and closing the connecting pipe.

[0023] Optionally, the fresh-keeping device for poultry eggs further includes:

[0024] A monitoring module disposed in the fresh-keeping space for monitoring the carbon dioxide content or oxygen content in the fresh-keeping space; and

[0025] A control module electrically connected to the monitoring module for controlling the gas conditioning module to adjust the gas content in the fresh-keeping space according to the monitoring result of the monitoring module.

[0026] Optionally, the fresh-keeping container is a drawer-type container, which includes a drawer body and a drawer sleeve. The drawer body has a top opening, and the drawer sleeve has a lateral opening. The drawer body is slidably disposed in the drawer sleeve through the lateral opening and jointly defines the fresh-keeping space with the drawer sleeve.

[0027] Optionally, the fresh-keeping container includes a sterilization module. The sterilization module is disposed in the fresh-keeping space or communicated with the air flow in the fresh-keeping space, and is configured to controllably release a sterilizing substance into the fresh-keeping space to purify the fresh-keeping space with the sterilizing substance.

[0028] Optionally, the internal temperature of the fresh-keeping space is set to -1°C to 4°C; and / or

[0029] The internal humidity of the fresh-keeping space is set to 75% - 85%.

[0030] According to the second aspect of the present invention, the present invention also provides a refrigerator, which includes the fresh-keeping device for poultry eggs described in any one of the above.

[0031] The fresh-keeping device for poultry eggs of the present invention adjusts the gas content in the fresh-keeping space through the gas conditioning module, so that the carbon dioxide content in the fresh-keeping space is 46% - 54%, the oxygen content is 7% - 11%, and the nitrogen content is 39% - 43%. In this way, during the storage of poultry eggs in the fresh-keeping space, the low concentration of oxygen and the high concentration of carbon dioxide can inhibit the respiration of poultry eggs, reduce the decomposition of organic matter in the egg body, and the high concentration of carbon dioxide can also make the carbon dioxide concentration inside and outside the egg body tend to be balanced, inhibiting the hatching of poultry eggs. Thus, both the fresh-keeping quality of poultry eggs can be improved and the fresh-keeping duration of poultry eggs can be extended.

[0032] Further, for the fresh-keeping device for poultry eggs of the present invention, it is required that the ratio K1 of the oxygen content to the nitrogen content in the fresh-keeping space is < 0.269. Normally, the ratio K2 of the oxygen content to the nitrogen content in outdoor air is ≈ 0.269, so K1 < K2. In this way, a better low-oxygen atmosphere can be created in the fresh-keeping space, which is beneficial to further inhibiting the respiration of poultry eggs, significantly improving the fresh-keeping quality of poultry eggs, and extending the fresh-keeping duration of poultry eggs.

[0033] Further, for the fresh-keeping device for poultry eggs of the present invention, its gas conditioning module includes a carbon dioxide supply device and an electrolytic deoxygenation device. The carbon dioxide content in the fresh-keeping space can be achieved by directly supplying carbon dioxide from the carbon dioxide supply device, and the oxygen content and nitrogen content in the fresh-keeping space can be achieved by the electrolytic deoxygenation device consuming part of the oxygen. Compared with introducing a mixed gas of prepared carbon dioxide, oxygen, and nitrogen into the fresh-keeping space, the technical solution of the present invention can save the preparation cost of oxygen and nitrogen.

[0034] Through the following detailed description of the specific embodiments of the present invention in conjunction with the drawings, those skilled in the art will become more clear about the above and other objects, advantages, and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0036] Figure 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of a fresh-keeping device according to an embodiment of the present invention;

[0038] Figure 3 is Figure 2 a schematic principle diagram of the electro-deoxidation device in

[0039] Figure 4 is a schematic structural diagram of a fresh-keeping container according to an embodiment of the present invention;

[0040] Figure 5 is a schematic block diagram of a fresh-keeping device according to an embodiment of the present invention.

[0041] Reference numerals:

[0042] 1, refrigerator; 10, box body; 11, refrigerating compartment; 12, freezing compartment; 20, fresh-keeping device; 210, fresh-keeping container; 211, drawer body; 212, drawer sleeve; 213, fresh-keeping space; 220, electro-deoxidation device; 221, housing; 222, communication port; 223, cathode plate; 224, anode plate; 225, liquid storage cavity; 226, liquid replenishing box; 227, water pipe; 228, water pump; 229, exhaust port; 230, carbon dioxide supply device; 231, gas cylinder; 232, connecting pipe; 233, solenoid valve; 240, monitoring module; 250, control module; 260, humidifying module; 270, sterilizing module. Detailed embodiments

[0043] Reference will now be made in detail to the embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each of the embodiments provided is intended to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still another embodiment. Accordingly, the present invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0044] The following will be described with reference to Figures 1 to 5 the fresh-keeping device 20 for poultry eggs and the refrigerator 1 according to the embodiments of the present invention. Among them, the orientation or positional relationship indicated by "inside", "outside", "up", "down", "top", "bottom", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. For the convenience of schematically showing the structure of the device, some of the drawings of the present invention are schematically shown in a perspective form.

[0045] In the description of this embodiment, it should be understood that the meaning of the term "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features can be further included.

[0046] In the description of this embodiment, the descriptions referring to terms such as "one embodiment", "some embodiments", "some examples", "one example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The present invention provides a refrigerator 1, Figure 1 which is a schematic structural diagram of the refrigerator 1 according to an embodiment of the present invention. The refrigerator 1 in this embodiment should be understood in a broad sense. For example, it can be a refrigerator 1, a freezer, a storage cabinet, etc., which are storage devices with a low-temperature preservation function.

[0048] Generally, the refrigerator 1 may include a cabinet 10. One or more storage compartments are formed inside the cabinet 10. The storage compartments can be configured as a refrigerating compartment 11, a freezing compartment 12, a variable-temperature compartment, etc. according to the refrigeration temperature. Specifically, the number, function, layout mode, etc. of the storage compartments can be configured according to actual needs.

[0049] The refrigerator 1 may further include a preservation device 20, which is mainly used to store eggs to be preserved, such as chicken eggs, duck eggs, goose eggs, etc., so as to improve the preservation quality of the eggs, extend the preservation duration of the eggs, and achieve the optimal preservation effect. The structure of the preservation device 20 will be introduced in detail below.

[0050] Figure 2 which is a schematic structural diagram of the preservation device 20 according to an embodiment of the present invention, Figure 3 is Figure 2 a schematic principle diagram of the electro-deoxidation device 220 in Figure 4 which is a schematic structural diagram of the preservation container 210 according to an embodiment of the present invention, Figure 5 which is a schematic block diagram of the preservation device 20 according to an embodiment of the present invention.

[0051] As Figures 2 to 5As shown, the freshness preservation device 20 may include a freshness preservation container 210 and a controlled atmosphere module. Among them, a freshness preservation space 213 is formed inside the freshness preservation container 210, and the eggs to be preserved are stored in the freshness preservation space 213. The controlled atmosphere module is in air flow communication with the freshness preservation space 213 and is used to adjust the gas content in the freshness preservation space 213 so that the carbon dioxide content in the freshness preservation space 213 is between 46% and 54%, the oxygen content is between 7% and 11%, and the nitrogen content is between 39% and 43%.

[0052] With the above solution, during the storage of eggs in the freshness preservation space 213, on the one hand, the low concentration of oxygen and the high concentration of carbon dioxide can inhibit the respiration of eggs and reduce the decomposition of organic matter in the egg body; on the other hand, the high concentration of carbon dioxide can also make the carbon dioxide concentrations inside and outside the egg body tend to be balanced and inhibit the hatching of eggs. In this way, both the freshness preservation quality of eggs can be improved and the freshness preservation duration of eggs can be extended.

[0053] In this embodiment, it is required that the ratio K1 of the oxygen content to the nitrogen content in the freshness preservation space 213 is <0.269. For example, K1 can be 0.18, 0.20, 0.22, 0.24, 0.26, etc. Normally, the ratio K2 of the oxygen content to the nitrogen content in outdoor air is approximately 0.269, so K1 < K2. In this way, a better low-oxygen atmosphere can be created in the freshness preservation space 213, which is beneficial to further inhibiting the respiration of eggs, significantly improving the freshness preservation quality of eggs, and extending the freshness preservation duration of eggs.

[0054] During the experiment, it was found that when the oxygen content in the freshness preservation space 213 was set between 7% and 11%, the nitrogen content was set between 39% and 43%, and the carbon dioxide content was set at 50% according to the above ratio relationship between the oxygen content and the nitrogen content, the freshness preservation effect on eggs reached the best. It can not only prevent eggs from suffering from oxygen deficiency necrosis but also inhibit egg hatching, so that users can still eat relatively fresh eggs after long-term storage.

[0055] In an alternative embodiment, the controlled atmosphere module may include an electro-deoxygenation device 220 and a carbon dioxide supply device 230. Among them, the electro-deoxygenation device 220 is configured to consume the oxygen in the freshness preservation space 213 through an electrochemical reaction under the action of an electrolysis voltage, so as to adjust the oxygen content in the freshness preservation space 213. The carbon dioxide supply device 230 is configured to supply carbon dioxide to the freshness preservation space 213 in a controlled manner, so as to adjust the carbon dioxide content in the freshness preservation space 213.

[0056] That is to say, the carbon dioxide content in the fresh-keeping space 213 can be achieved by directly supplying carbon dioxide from the carbon dioxide supply device 230, and the oxygen content and nitrogen content in the fresh-keeping space 213 can be achieved by the electrolytic deoxidation device 220 consuming part of the oxygen. Compared with introducing a mixed gas of prepared carbon dioxide, oxygen, and nitrogen into the fresh-keeping space 213, the advantage of this embodiment is that the preparation cost of oxygen and nitrogen can be saved.

[0057] In one example, the electrolytic deoxidation device 220 may include a housing 221, a cathode plate 223, and an anode plate 224. The electrolytic deoxidation device 220 can be disposed in the fresh-keeping space 213, or an installation opening can be formed on the wall of the fresh-keeping space 213, and the electrolytic deoxidation device 220 can be snapped into the installation opening.

[0058] Among them, the housing 221 is generally in the shape of a flat cuboid, and one side wall (such as the bottom wall) with the largest area of the housing 221 can be opened to form a communication port 222, which is beneficial to increasing the contact area between the cathode plate 223 of the electrolytic deoxidation device 220 and the fresh-keeping space 213.

[0059] The cathode plate 223 is disposed at the communication port 222 to jointly define a liquid storage cavity 225 for containing electrolyte with the housing 221, and is used to consume the oxygen in the fresh-keeping space 213 through an electrochemical reaction under the action of an electrolytic voltage. The cathode plate 223 is disposed at the communication port 222, and the cathode plate 223 has a waterproof and breathable function (such as a waterproof and breathable membrane). While closing the liquid storage cavity 225, it can ensure the air flow communication between the cathode plate 223 and the fresh-keeping space 213. For example, the oxygen in the fresh-keeping space 213 can undergo a reduction reaction at the cathode plate 223, that is: O2 + 2H2O + 4e- → 4OH-. The electrolyte contained in the liquid storage cavity 225 can be an acidic aqueous solution or an alkaline aqueous solution, for example, it can be a 1-5 mol / L sodium hydroxide solution.

[0060] The anode plate 224 is disposed in the liquid storage cavity 225 and is used to provide reactants to the cathode plate 223 through an electrochemical reaction. The anode plate 224 and the cathode plate 223 are spaced apart from each other in the liquid storage cavity 225. And when energized, the anode plate 224 is used to provide reactants (such as electrons) to the cathode plate 223 through an electrochemical reaction and generate oxygen. For another example, the OH- generated by the cathode plate 223 can undergo an oxidation reaction at the anode plate 224 and generate oxygen, that is: 4OH- → O2 + 2H2O + 4e-. An exhaust port 229 can also be formed on the housing 221 (such as the top wall), and the oxygen can be discharged through the exhaust port 229.

[0061] The above examples of electrochemical reactions of the anode plate 224 and the cathode plate 223 are merely illustrative. Based on the understanding of the above embodiments, those skilled in the art should be able to easily change the type of electrochemical reaction, and these changes should fall within the scope of protection of the present invention.

[0062] Furthermore, the electrolytic deoxygenation device 220 may also include a liquid replenishing box 226, a water pipe 227 and a water pump 228. The positions of the liquid replenishing box 226, the water pipe 227 and the water pump 228 may be arranged in a targeted manner according to actual needs. The liquid replenishing box 226 is filled with electrolyte, the water pipe 227 connects the liquid replenishing box 226 with the liquid storage chamber 225, and the water pump 228 is arranged on the water pipe 227. After the water pump 228 is started, the electrolyte in the liquid replenishing box 226 can be smoothly transported to the liquid storage chamber 225 to achieve liquid replenishment.

[0063] In one example, the carbon dioxide supply device 230 may include a gas cylinder 231, a connecting pipe 232, and a solenoid valve 233. The carbon dioxide supply device 230 may be disposed outside the fresh-keeping container 210, or may be disposed in the fresh-keeping space 213. In order to improve the utilization rate of the fresh-keeping space 213, the carbon dioxide supply device 230 is preferably disposed outside the fresh-keeping container 210.

[0064] Among them, the gas cylinder 231 is filled with carbon dioxide, and the carbon dioxide exists in the gas cylinder 231 in the form of compressed gas or compressed liquid or gas-liquid mixture. The gas cylinder 231 has an air outlet, and the fresh-keeping space 213 has an air inlet. The two ends of the connecting pipe 232 are respectively connected to the air inlet and the air outlet. The solenoid valve 233 is arranged on the connecting pipe 232, which is used to open and close the connecting pipe 232, so as to controllably adjust the supply and shutoff state of carbon dioxide.

[0065] In an optional embodiment, the preservation device 20 may further include a monitoring module 240 and a control module 250, wherein the monitoring module 240 may be disposed in the preservation space 213 to monitor the carbon dioxide content or oxygen content in the preservation space 213, and the control module 250 is electrically connected to the monitoring module 240 to control the gas conditioning module to adjust the gas content in the preservation space 213 according to the monitoring results of the monitoring module 240.

[0066] The fresh-keeping space 213 can be a relatively closed space, and the carbon dioxide content, oxygen content and nitrogen content therein can be maintained at 50%, 10% and 40% respectively. The monitoring module 240 can be a gas sensor, specifically a carbon dioxide concentration sensor and an oxygen concentration sensor. When the user takes and puts eggs, the fresh-keeping space 213 is opened, which breaks the original gas ratio balance in the fresh-keeping space 213, which needs to be readjusted.

[0067] During the adjustment process, the control module 250 can separately control the carbon dioxide supply device 230 and the electro-deaeration device 220 to work independently, dynamically adjusting the carbon dioxide content and oxygen content in the fresh-keeping chamber, so that the carbon dioxide content, oxygen content and nitrogen content in the fresh-keeping chamber are restored to 50%, 10% and 40% respectively.

[0068] Taking eggs as an example, eggs contain microorganisms and enzymes that maintain life activities. During the experiment, it was found that when the storage temperature is -1°C to 4°C, especially -1°C to 0°C, the respiration of eggs can be significantly reduced, the evaporation of moisture inside the eggshell can be reduced, which is beneficial to maintaining the nutritional value and freshness of eggs. When the storage temperature is 10°C to 20°C, the eggs will start to change gradually; when the storage temperature is 21°C to 25°C, the embryo of the eggs begins to develop.

[0069] Too high temperature will cause phenomena such as the ovule and yolk of eggs to expand, the egg white to become thinner, moisture to evaporate, the air chamber to increase, and the weight to decrease, resulting in the deterioration of eggs and the reduction of nutritional value. At 9°C, the weight loss of one egg per day and night is about 1mg, and for every 10°C increase in temperature, the weight loss increases by more than 5 times. Too low temperature will cause the eggshell to crack and the egg liquid to freeze. When the storage temperature is -2°C, the eggshell of the egg cracks and the egg liquid oozes out. When the storage temperature is -7°C, the egg liquid begins to freeze.

[0070] In the embodiment of the present invention, the internal temperature of the fresh-keeping space 213 can be set to -1°C to 4°C, for example, -1°C, 0°C, 1°C, 2°C, 3°C, 4°C, etc., so as to provide the best temperature conditions for the storage of poultry eggs.

[0071] In one example, the fresh-keeping space 213 has an air inlet, and the air inlet is used to introduce a refrigerating air flow into the fresh-keeping space 213. The refrigerating air flow can be provided by the refrigeration system of the refrigerator 1. By using the refrigerating air flow to adjust the internal temperature of the fresh-keeping space 213, the internal temperature of the fresh-keeping space 213 can be quickly reduced to -1°C to 4°C.

[0072] The surface of poultry eggs has a layer of natural gelatinous film, which can protect poultry eggs from being invaded by external pollutants such as environmental microorganisms. It is an important protective layer of poultry eggs themselves. It is extremely easy to be damaged by moisture absorption and condensation, washing, etc., resulting in the exposure of pores, accelerating the entry of bacteria on the eggshell surface into the egg white to reproduce, and accelerating spoilage.

[0073] In the embodiment of the present invention, the internal humidity of the fresh-keeping space 213 can be set to 75% to 85%, for example, 75%, 78%, 80%, 82%, 85%, etc., so as to provide the best humidity conditions for the storage of poultry eggs, maintain the surface of the eggshell dry without condensation, and prevent the environment from being too dry and accelerating the evaporation of moisture in the poultry eggs.

[0074] In one example, the freshness preservation device 20 further includes a humidification module 260. The humidification module 260 is disposed in the freshness preservation space 213 or in communication with the freshness preservation space 213, and is configured to controllably adjust the internal humidity of the freshness preservation space 213 such that the internal humidity of the freshness preservation space 213 is 75% - 85%. Of course, a moisture-permeable film can also be attached inside the freshness preservation space 213 to adjust the internal humidity of the freshness preservation space 213 by means of the moisture-permeable film.

[0075] During the actual freshness preservation process, the poultry eggs can be first placed in the freshness preservation space 213, and then the internal temperature and internal humidity of the freshness preservation space 213 can be adjusted by means of the refrigerating air flow and the humidification module 260. Finally, the carbon dioxide content, oxygen content, and nitrogen content of the freshness preservation space 213 can be adjusted by means of the gas conditioning module.

[0076] When the poultry eggs breathe through the pores, if there are odor molecules in the surrounding environment, the odor molecules will contaminate the poultry eggs and affect the edible quality of the poultry eggs. Poultry eggs are natural media for bacteria. When contaminated by poultry manure, blood stains, egg liquid, and other organic substances, the bacteria will first grow and reproduce on the surface of the eggshell and gradually invade the egg through the pores. At a suitable temperature, the bacteria will reproduce rapidly, accelerating the spoilage and deterioration of the poultry eggs.

[0077] In an embodiment of the present invention, the freshness preservation container 210 may further include a sterilization module 270. The sterilization module 270 may be disposed in the freshness preservation space 213 or in air flow communication with the freshness preservation space 213, and is configured to controllably release a sterilizing substance into the freshness preservation space 213 to purify the freshness preservation space 213 by means of the sterilizing substance.

[0078] In one example, the sterilization module 270 may include a housing and an electrode group. Among them, the housing is in the shape of a box, and a cavity is defined inside the housing. The electrode group is disposed in the cavity. The electrode group includes an excitation electrode and a receiving electrode, and the excitation electrode and the receiving electrode are arranged at intervals. The excitation electrode is used to generate high-energy electrons. The high-energy electrons can move directionally under the action of an electric field and collide with air molecules, thereby generating an ion wind blowing toward the receiving electrode side. During the directional movement of the electrons, the odor molecules can be broken up, oxygen can be excited to generate ozone, and the excitation electrode can break through the cells of suspended organisms through high-voltage ionization discharge, thereby realizing sterilization and odor removal of the freshness preservation space 213.

[0079] Of course, the above examples of the sterilization module 270 are merely illustrative. Based on an understanding of the above embodiments, those skilled in the art should easily transform the type of the sterilization module 270, and all such transformations should fall within the protection scope of the present invention.

[0080] The freshness preservation container 210 of the present invention can be disposed in the storage compartment of the box body 10, can also be fixed to the inner side of the door body of the storage compartment, or can be embedded in the box body 10 as an independent compartment of the box body 10.

[0081] In one example, the fresh-keeping container 210 is a drawer-type container, which includes a drawer body 211 and a drawer sleeve 212. The drawer sleeve 212 is fitted into the box body 10 and serves as the fresh-keeping inner liner of the box body 10. The drawer sleeve 212 has a lateral opening, and the drawer body 211 has a top opening. The drawer body 211 is slidably disposed in the drawer sleeve 212 through the lateral opening and jointly defines a fresh-keeping space 213 with the drawer sleeve 212. In this way, when the user takes and places eggs, the convenience of taking and placing can be improved by pushing and pulling the drawer body 211.

[0082] Considering that during the process of pushing and pulling the drawer body 211, the eggs are easily squeezed and collided, resulting in problems such as cracks in the eggshells, egg white leakage, or even yolk dispersion, which seriously affect the fresh-keeping quality of the eggs. Therefore, an egg body shelf can be provided in the drawer body 211. The egg body shelf has a plurality of egg trays, and each egg tray can hold one egg to independently protect the eggs with the egg trays.

[0083] In an alternative embodiment, a refrigerating compartment 11 or a freezing compartment 12 is further defined in the box body 10 of the refrigerator 1. The electro-deoxidation device 220 is communicated with the refrigerating compartment 11 or the freezing compartment 12, and the oxygen released by it is supplied to the refrigerating compartment 11 or the freezing compartment 12 to increase the oxygen content in the refrigerating compartment 11 or the freezing compartment 12.

[0084] In one example, an exhaust pipe is connected to the exhaust port 229 of the electro-deoxidation device 220. The outlet of the exhaust pipe can be respectively communicated with the refrigerating compartment 11 and the freezing compartment 12, and a regulating valve for switching the oxygen flow direction is provided on the exhaust pipe. In this way, when "oxygen-loving" food materials are stored in the refrigerating compartment 11 or the freezing compartment 12, the oxygen discharged from the electro-deoxidation device 220 can be correspondingly transported into the refrigerating compartment 11 or the freezing compartment 12 to obtain a better storage effect.

[0085] Eggs are living organisms that are constantly undergoing a series of physiological and biochemical activities. The quality of eggs will change with the temperature and humidity. The fresh-keeping device 20 of the present invention can provide a fresh-keeping space 213 that is dry, clean, odorless, suitable in temperature, and suitable in humidity for storing eggs, so that the eggs can achieve the best fresh-keeping effect when stored in the fresh-keeping space 213.

[0086] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A fresh-keeping device for poultry eggs, characterized in that, it includes: a fresh-keeping container, which forms a fresh-keeping space inside for storing the poultry eggs to be fresh-kept; and a controlled atmosphere module, which is in air flow communication with the fresh-keeping space and is used to adjust the gas content in the fresh-keeping space so that the carbon dioxide content in the fresh-keeping space is between 46% and 54%, the oxygen content is between 7% and 11%, and the nitrogen content is between 39% and 43%.

2. The fresh-keeping device for poultry eggs according to claim 1, characterized in that, the ratio of the oxygen content to the nitrogen content in the fresh-keeping space <0.

269.

3. The fresh-keeping device for poultry eggs according to claim 1, characterized in that, the controlled atmosphere module includes: an electro-deoxidation device configured to consume the oxygen in the fresh-keeping space through an electrochemical reaction under the action of an electrolysis voltage, thereby adjusting the oxygen content in the fresh-keeping space; and a carbon dioxide supply device configured to controllably supply carbon dioxide into the fresh-keeping space, thereby adjusting the carbon dioxide content in the fresh-keeping space.

4. The fresh-keeping device for poultry eggs according to claim 3, characterized in that, the electro-deoxidation device includes: a housing, which is provided with a communication port for air flow communication with the fresh-keeping space; a cathode plate, which is arranged at the communication port to jointly define a liquid storage cavity for containing electrolyte with the housing, and is used to consume the oxygen in the fresh-keeping space through an electrochemical reaction under the action of an electrolysis voltage; and an anode plate, which is arranged in the liquid storage cavity and is used to provide reactants to the cathode plate through an electrochemical reaction.

5. The fresh-keeping device for poultry eggs according to claim 3, characterized in that, the carbon dioxide supply device includes: a gas cylinder filled with carbon dioxide; a connecting pipe, one end of which is connected to the gas cylinder and the other end is connected to the fresh-keeping space; and a solenoid valve, which is arranged on the connecting pipe and is used to controllably open and close the connecting pipe.

6. The fresh-keeping device for poultry eggs according to claim 1, characterized in that, it further includes: a monitoring module, which is arranged in the fresh-keeping space and is used to monitor the carbon dioxide content or oxygen content in the fresh-keeping space; and a control module, which is electrically connected to the monitoring module and is used to control the controlled atmosphere module to adjust the gas content in the fresh-keeping space according to the monitoring result of the monitoring module.

7. The fresh-keeping device for poultry eggs according to claim 1, characterized in that, the fresh-keeping container is a drawer-type container, which includes a drawer body and a drawer sleeve. The drawer body has a top opening, and the drawer sleeve has a lateral opening. The drawer body is slidably arranged in the drawer sleeve through the lateral opening and jointly defines the fresh-keeping space with the drawer sleeve.

8. The fresh-keeping device for poultry eggs according to claim 1, characterized in that, the fresh-keeping container includes a sterilization module, which is arranged in the fresh-keeping space or in air flow communication with the fresh-keeping space and is configured to controllably release a sterilizing substance into the fresh-keeping space to purify the fresh-keeping space with the sterilizing substance.

9. The freshness preservation device for poultry eggs according to claim 1, characterized in that, the internal temperature of the freshness preservation space is set to -1°C to 4°C; and / or the internal humidity of the freshness preservation space is set to 75% to 85%.

10. A refrigerator, characterized in that, it includes the freshness preservation device for poultry eggs according to any one of claims 1-9.

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